Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
οιωνισμώ an omen LXX.Gen.44.5LXX.Gen.44.15
οιωνισμόσ omen LXX.Num.23.23

Liddell-Scott-Jones

οἰωνισμός (oiōnismos) an omen G:N-M

οἰωνισμός-ισμός, ,

= {οἰώνισμα}, [LXX+1st c.AD+].

LSJ Scripture Refs: LXX.Gen.44.5